年度 | 实际值 |
---|---|
1992 | 3.2 |
1993 | |
1994 | |
1995 | 3.3 |
1996 | |
1997 | |
1998 | |
1999 | 3.4 |
2000 | 3.5 |
2001 | 4 |
2002 | 3.4714 |
2003 | 3.5149 |
2004 | 3.6808 |
2005 | 3.7002 |
2006 | 3.5369 |
2007 | 3.6331 |
2008 | 3.6774 |
2009 | 3.5525 |
2010 | 3.5773 |
2011 | 4 |
2012 | 4 |
2013 | |
2014 | 4.69 |
2015 | 4.7759 |